Dysprosium dipolar Bose-Einstein condensate with broad Feshbach resonances
Authors: Lucioni E., Tanzi L., Fregosi A., Catani J., Gozzini S., Inguscio M., Fioretti A., Gabbanini C., Modugno G.
Autors Affiliation: LENS and Dip. di Fisica e Astronomia, Università di Firenze, 50019 Sesto Fiorentino, Italy; CNR-INO, S.S. A. Gozzini di Pisa, via Moruzzi 1, 56124 Pisa, Italy; Dipartimento di Fisica, Università di Pisa, Largo B. Pontecorvo, 56127 Pisa, Italy;
CNR-INO, S.S. Sesto Fiorentino, 50019 Sesto Fiorentino, Italy
Abstract: We produce Bose-Einstein condensates of 162Dy atoms employing an innovative technique based on a resonator-enhanced optical trap that allows efficient loading from the magneto-optical trap. We characterize the scattering properties of the ultracold atoms for magnetic fields between 6 and 30 G. In addition to the typical chaotic distribution of narrow Feshbach resonances in lanthanides, we discover two rather isolated broad features at around 22 G and 27 G. A characterization using the complementary measurements of losses, thermalization,
anisotropic expansion, and molecular binding energy points towards resonances of predominant s-wave character. Such resonances will ease the investigation of quantum phenomena relying on the interplay between dipole and contact interactions.
Journal/Review: PHYSICAL REVIEW A
Volume: 97 (6) Pages from: 060701-1 to: 060701-5
KeyWords: dipolar quantum gases, Feshbach resonancesDOI: 10.1103/PhysRevA.97.060701Citations: 17data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-10-24References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here